SRT is a group within Chrysler though. That means they might carry their own budget and P&L's. The pendulum is swinging in the direction of hybrids and the like. The market for SRT vehicles is relatively small, and I would hazard to guess that most folks that want one and can afford one, already have one. Consumers are a finicky bunch, and love to ride the wave of what's in. Right now, that isn't performance vehicles. Think about it, there are still brand new SRT-10 trucks sitting on some lots (that I have heard about) and how long has it been since they stopped making them?
I hope it doesn't happen, but fully expect it.